We drove through here a year ago and thought would be a great place for quiet beach getaway, so returned this year for a week. The beach is lovely and was very calm. Between beach breaks we hiked up the hill with our little on in a backpack. Not a strenuous walk but a good bit of excercise.
The beach promenade is quaint and has a few resteraunts, though there is not much variety of food between them, which was the only dissappointing piece about Luz. That said, the supermarkets have all you need if staying in a place with a kitchen, which we were. Took a real fancy to the local tortillas.
If you like the simple things and being away from the crowd on a great beach, then Luz is for you.